Java开发 - 老虎机

老虎机

package test.iris;
 
import java.awt.Color;
 
import java.awt.FlowLayout;
import java.awt.Font;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.Random;
 
import javax.swing.BorderFactory;
import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.SwingConstants;
import javax.swing.border.EmptyBorder;
 
public class UI extends JFrame
{
	private static UI ui = null;
	static String[] paths =
	{ "1.png", "2.png", "3.png" };
 
	private MyLabel labelLeft = new MyLabel(paths[0], 0);// 左图
	private MyLabel labelCenter = new MyLabel(paths[1], 1);// 中图
	private MyLabel labelRight = new MyLabel(paths[2], 2);// 右图
 
	private JButton button = new JButton("开始");// 开始按钮
 
	private JLabel labelMessage = new JLabel("");// 结果标签
 
	private UI()
	{
		setTitle("老虎机");
		setBounds(200, 200, 500, 500);
		JPanel panel = new JPanel();
		setContentPane(panel);
		panel.setLayout(new GridLayout(3, 1));
		panel.setBorder(new EmptyBorder(50, 50, 50, 50));
 
		// 上中下三块面板
		JPanel panelTop = new JPanel();
		JPanel panelCenter = new JPanel();
		JPanel panelBottom = new JPanel();
 
		panel.add(panelTop);
		panel.add(panelCenter);
		panel.add(panelBottom);
 
		// 三张图片显示区域
		panelTop.setLayout(new FlowLayout());
		panelTop.add(labelLeft);
		panelTop.add(labelCenter);
		panelTop.add(labelRight);
 
		// 开始按钮面板
		panelCenter.setLayout(new GridLayout(1, 1));
		panelCenter.setBorder(new EmptyBorder(30, 100, 30, 100));
		button.addActionListener(new MyListener());
		panelCenter.add(button);
 
		// 抽奖结果面板
		panelBottom.setLayout(new GridLayout(1, 1));
		labelMessage.setBorder(BorderFactory.createLineBorder(Color.BLACK));
		labelMessage.setFont(new Font("微软雅黑",0 , 40));
		labelMessage.setForeground(Color.red);
		labelMessage.setHorizontalAlignment(SwingConstants.CENTER);
		
		panelBottom.add(labelMessage);
 
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		setVisible(true);
	}
 
	public static UI getInstance()
	{
		return UI.ui;
	}
 
	public static String[] getPaths()
	{
		return paths;
	}
 
	public MyLabel getLabelLeft()
	{
		return labelLeft;
	}
 
	public MyLabel getLabelCenter()
	{
		return labelCenter;
	}
 
	public MyLabel getLabelRight()
	{
		return labelRight;
	}
 
	public JButton getButton()
	{
		return button;
	}
 
	public JLabel getLabelMessage()
	{
		return labelMessage;
	}
 
	public static void main(String[] args)
	{
		UI.ui = new UI();
	}
}
 
class MyListener implements ActionListener
{
	private boolean buttonFlag = false;// 按钮点击状态，默认未点击
	public static boolean threadFlag = true;//线程中断标志
 
	@Override
	public void actionPerformed(ActionEvent e)
	{
 
		UI ui = UI.getInstance();
		JButton button = ui.getButton();
		JLabel labelMessage = ui.getLabelMessage();
 
		MyLabel labelLeft = ui.getLabelLeft();
		MyLabel labelCenter = ui.getLabelCenter();
		MyLabel labelRight = ui.getLabelRight();
		if (buttonFlag)
		{
			threadFlag = false;
			buttonFlag = false;
			button.setText("开始");
 
			synchronized (labelLeft) //等待三个线程释放锁
			{
				synchronized (labelCenter)
				{
					synchronized (labelRight)
					{
						int leftId = labelLeft.getId();
						int centerId = labelCenter.getId();
						int rightId = labelRight.getId();
						String result = getResult(leftId, centerId, rightId);
						labelMessage.setText(result);
					}
				}
			}
		} else
		{
			threadFlag = true;
			buttonFlag = true;
			new MyThread(220, labelLeft).start();
			new MyThread(150, labelCenter).start();
			new MyThread(60, labelRight).start();
			labelMessage.setText("");
			button.setText("暂停");
		}
	}
 
	public static String getResult(int leftId, int centerId, int rightId)
	{
		String result = null;
		if (leftId == centerId & leftId == rightId)
			result = "一等奖";
		else if (leftId == centerId || leftId == rightId || centerId == rightId)
			result = "二等奖";
		else
			result = "未中奖";
		return result;
	}
}
 
class MyLabel extends JLabel
{
	private int id;// 标签id
 
	public MyLabel(String path, int id)
	{
		ImageIcon icon = new ImageIcon(path);
		setIcon(icon);
		this.id = id;
	}
 
	public int getId()
	{
		return id;
	}
 
	public void setId(int id)
	{
		this.id = id;
	}
 
}
 
class MyThread extends Thread
{
	private long time;
	private MyLabel label;
	private Random random = new Random();
	public MyThread(long time, MyLabel label)
	{
		this.time = time;
		this.label = label;
	}
	@Override
	public void run()
	{
		synchronized (label) //锁住lable对象
		{
			while (MyListener.threadFlag)
			{
				try
				{
					Thread.sleep(time);
					int id = random.nextInt(3);
					label.setId(id);
					ImageIcon icon = new ImageIcon(UI.paths[id]);
					label.setIcon(icon);
				} catch (InterruptedException e)
				{
					e.printStackTrace();
				}
			}
		}
	}
}